Biology Semester Exam Review Puzzle

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Across
  1. 3. macro-molecule made up of amino acids
  2. 4. means without oxygen
  3. 8. component of cell membrane
  4. 9. where Krebs cycle takes place
  5. 10. stable or balanced internal conditions
  6. 13. sum of all chemical processes in an organism
  7. 15. variable that is changed during an experiment
  8. 19. system of moral values and principles
  9. 20. contains light-absorbing pigment
  10. 23. destroys damaged cells and cleans up cellular debris
  11. 24. diffusion of water across membrane
Down
  1. 1. allows gases and water to enter/leave a leaf; prevents dehydration
  2. 2. involved in making a protein
  3. 5. contains thylakoids
  4. 6. active process where substances are brought into cell
  5. 7. compound that contains the element carbon
  6. 11. has a membrane-bound nucleus and other organelles
  7. 12. characteristic of life that relates to passing down traits
  8. 14. chemical formula is C6H12O6
  9. 16. product of glycolysis
  10. 17. passive process
  11. 18. metric unit for mass
  12. 21. receives no experimental treatment
  13. 22. where the Calvin cycle takes place